Nut cracker



FIG. 1 is a perspective view of the nut cracker showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof, the right side view and rear view being identical; and,

FIG. 4 is a bottom view thereof, the top view being identical. 

The ornamental design for a nut cracker, as shown and described. 